I'm trying to understand what key is the song 'Crush' by Dave Matthews in. It uses all the chords in Bm but it also uses F major and C major as well as D/F#; Why does the F and C sound right with this ...

I am self taught on piano. There are some notes and symbols that I am trying to learn. I have come across a music sheet that starts with Cmajor and then along the piece it changes to 7 sharps. How do ...

So I'm not really sure I'm phrasing the question properly but I'll try to explain. My theory level is pretty basic.
I'm trying to deconstruct a song and (according to a website) it's in the key CMin. ...

In jazz, let's say, how would one choose a key signature for writing a lead sheet for a song where keys change every few measures or faster? Is writing the key changes explicitly going to be helpful ...

Books and articles I've read on learning key signatures seem to focus on mnemonics that tell you how many sharps or flats the key has, but I don't understand how knowing B Major has 5 sharps helps you ...

I'm arranging wind parts for the following song (excerpt below). This is the end of a repeated section that starts in D major and changes to F major halfway through. So, the repeat mark at the end of ...

I am wondering how the accidental in the first chord (see what is circled) is played? Does any accidental simply move the note up or down a half-step from what the note is supposed to be based on the ...

I'm VERY new to music theory, just learning. I'm reading about keys and scales right now. From what I understand major keys are all the same except for being shifted by one or more semitones (e.g. C ...

For the past four or so years now, I have been playing the Viola. Y'all know what that means: Alto clef. Up until just a few weeks ago, I have always seen an F# displayed in a key signature like this:
...

I'm just getting back to playing on keyboard. I'm trying to play "Ode to Joy" from the piano sheet but I have a basic question.
At the beginning of some staffs, on the right of the treble clef I can ...

I have some experience reading music, but today I came across a Bartok piece, "Melody with Accompaniment", part of Mikrokosmos Vol. 2. The key signature has one sharp, C#.
I was under the impression ...

I am wondering about how many major and minor keys there are and why.
Here are some suggestions:
24 keys
One could argue that there should be one major and one relative minor key for each of the 12 ...

In the below sheet music B is marked as flat however the only notes played are g g g d e c C. Is that just a typo on the part of the person who made this image and it should be on the upper C or am I ...

I'm mostly self-taught, so I don't know much in the way of theory beyond the basics. I have heard of G sharp Major a few times. I believe a scale in the key goes as such: G♯, A♯, B♯, C♯, D♯, E♯, Fx, ...

There are so many songs in pretty odd key-signatures like 4,5,6 sharps or flats. At least this is my impression when I listen to songs on the radio/net while trying to follow them on my piano/guitar. ...

Is there a good mnemonic or trick for working out the key signature from a given key? I can always write out the chromatic scale, then count out the appropriate intervals from the tonic, and figure ...

Back in the days when I was studying from John Thompson's First Grade Piano book, I had come across a peculiarity which I could not understand: in pages 13-15 there are pieces which are in the key of ...

I have trouble deciding what accidentals to put in the key signature for pieces in dorian, phrygian, lydian or mixolydian modes. There seem to be tradeoffs associated with each choice.
For example, ...